RFR: 8270344: Session resumption errors [v4]

[Sean Coffey]

> Corner case where a session resumption can fail if the TLS server changes supported protocol versions in relation to a cached SSLSession. This is primarily an issue where the legacy TLS version is used in place of the newer "supported_versions" TLS extension.

Sean Coffey has updated the pull request incrementally with one additional commit since the last revision:

  maxProtocolVersion refactoring

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/5110/files
  - new: https://git.openjdk.java.net/jdk/pull/5110/files/86ae055f..c12551ad

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=5110&range=03
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=5110&range=02-03

  Stats: 5 lines in 1 file changed: 0 ins; 3 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5110.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5110/head:pull/5110

PR: https://git.openjdk.java.net/jdk/pull/5110